*{
  padding: 0;
  margin: 0;
}

html,body{
  height: 100%;
}
::-webkit-scrollbar {
  /*滚动条整体样式*/
  width: 5px;
  height: 5px;
}

::-webkit-scrollbar-thumb {
  /*滚动条里面小方块*/
  border-radius: 5px;
  background-color: #ddd;
  background-image: -webkit-linear-gradient(
          45deg,
          rgba(255, 255, 255, 0.2) 25%,
          transparent 25%,
          transparent 50%,
          rgba(255, 255, 255, 0.2) 50%,
          rgba(255, 255, 255, 0.2) 75%,
          transparent 75%,
          transparent
  );
}
.app-lyout{
  display: flex;
  flex-direction: column;
  height: 100%;
}